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Complete List of Cheat Codes:
Go to console (you can open the console with the ~ key) then type
exec cheats.cfg
-then hit Enter and close console. You then can press these keys during gameplay to activate the functions shown in this list:
* G - give everything except jetpack and forcefield
* H - give all ammo
* J - give jetpack
* F - give forcefield
* L - give extra-life
* K - kill self
* I - turn invincibility ON/OFF
* P - developer's pause ("Matrix" mode)
* - small HUD
* = normal HUD
* M show map name you are on
Other notes / things
Kick combo - kick an enemy three times in a row with the double-jump-kick successfully and get special "Combo" powerup.
You get Double damage damage powerup when you reach 250 ego points, and an All-ammo "Quad-damge" if you hit 400 ego points. You should not get these twice in one map.
If you complete and finish the game on Hard difficulty with ALL Nukes, you are rewarded with the X-3000 Lightning Gun for future playing and replaying.
DEMO PLAYBACK:
You can experiment with recording your own demos by typing 'record [demoname]' when you are up and running in a game. To end your demo, simply die, or pause the game by hitting esc.
Play your demo by typing 'play [demoname]'